* {
    margin: 0;
    padding: 0;
    font-family: 'montserrat', sans-serif;
    box-sizing: border-box;
    list-style: none;
}

body {
    background: rgba(123,123,123,.5);
    background-size: cover;
}

.business-card {
    width: 500px;
    height: 260px;
}

.middle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.front, .back {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: absolute;
    backface-visibility: hidden;
    transition: transform 0.5s linear;
}

.front {
    background: rgba(255,255,255,.7);
    padding: 40px;
    transform: perspective(600px) rotateX(180deg);
}

.front::before, .front::after {
    content: '';
    position: absolute;
    right: 0;
}

.front::before {
    background: #2c3e50;
    width: 80px;
    height: 120px;
    bottom: 0;
    clip-path: polygon(0 100%,40% 0,100% 100%,80% 100%);
}

.front::after {
    background: #34495e;
    width: 100px;
    height: 100px;
    top: 0;
    clip-path: polygon(0 0,100% 0,100% 100%,80% 100%);
}

.front h2 {
    text-transform: uppercase;
}

.front span {
    background: #34495e;
    color: #fff;
    padding: 4px 10px;
    display: inline-block;
    margin-bottom: 20px;
    font-size: 14px;
}

.front .contact-info li {
    margin: 10px 0;
    display: flex;
    align-items: center;
}

.front .contact-info li i {
    width: 26px;
    height: 26px;
    background: #34495e;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 6px;
}

.back {
    background: rgba(0,0,0,.7);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 8px;
    font-size: 24px;
    transform: perspective(600px) rotateX(0deg);
}

.business-card-active .front {
    transform: perspective(600px) rotateX(0deg);
}

.business-card-active .back {
    transform: perspective(600px) rotateX(-180deg);
}
